Calculating machine



June 21, 1932. GARDNER CALCULATING MACHINE Original Filed June 7, 1924 2 Sheets-Sheet 1 June ,21, 1932- c. GARDNER CALCULATING MACHINE Original Filed June 7, 1924 2 Sheets-Sheet 2 INVENTOR Patented June 21, 1932 UNITED STATES PATENToFl-ICE CLYDE GARDNER, DECEASED, LATE OF EBENSBURG, PENNSYLVANIA, BY EDNA B. GARDNER, ADMINISTRATRIX, OF EBENSBURG', PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO GARDNER COMPANY, OF EBENSBURG, PENNSYLVANIA1 A CORPORATION OF DELAWARE CALCULATING MACHINE Original application led June 7, 1924, Serial No. 718,678.

Divided and this application led November 5,

1928. Serial No. 317,432.

This application is a division of the application of Clyde Gardner, Serial No. 7 18,67 8, tiled J une 7, 1924.-, and the subject matter described and claimed herein relates more particularly to certain safety devices which are desi ned to prevent misoperation of the mecanism, which, but for these devices, might occur.

More particularly, the safety devices referred to are used to prevent operation of the mechanism while the total and sub-total keys of the machine are partly depressed; and while the totalizer clearing or resetting mechanism of the machine is operating; and to compel the use of the operating mechanism after either the total key or sub-total key has been depressed.

The accompanying drawings show onlyso much of the machine as is necessary to an understanding of the above mentioned features of this invention; reference may be had to the drawings and specification of the parent application, Serial No. 718,678, above referred to, (corresponding to British Patent #293,080) or to companion divisional application Serial No. 317,431, filed Nov. 5,

1928, for an understanding of the other parts of the machine.

Fig. 1 is a view showing the locking devices which come into use during the depression of either the total ke or the sub-total key, or if either of these eys has been depressed and then released, the totalizer clearing or resetting actuator being shown in moved position.

Fig. 2 is a view in detail of means to prevent operation of the machine while the totalizer clearing or resetting mechanism is op erating, the totalizer clearing or resetting actuator being again shown moved.

Fig. 3 is a rear view of the locking devices illustrated in side elevation in Figs. 1 and 2.

Fig. 4 is a cross-sectional view throughthe registering and printing mechanism of the machine to which the invention has been applied.

Fig. 5 is a detail elevation of a portion of the totalizer clearing or resetting mechanism.

The interlocks to which this divisional application is directed, relate more particularly to those employed in the total taking operations, which operations are fully set forth in the parent application above referred to.

Brieiiy, in taking a total, one of the registers 473 is brought into cooperative relation with the toothed segmental ends of a series of levers 610, and a spring operated total setting mechanism is released. This setting mechanism operates in each denominational order of the machine, successively from right to left, the successive action being governed by a shaft 607, provided with a spirally arranged series of pins 6511, the shaft being rotated by means of a spring driven segment 618, released upon depression of the total or the sub-total key 217 3 or 21 8. Each pin 6511 of shaft 607 acts first to release the related total hook 613, so that the tooth thereof will be brought into the path of movement of stop pin 457 of the related register wheels. Thereafter the pin 6511 acts to release the related spring tensioned lever 610, allowing theregister wheel to be rotated until the pin 57 contacts with the tooth of total hook 613. This brings the register wheel to a position representing zero, and also determines the amount of movement transmitted from lever 610 to its attached type arm 611, bringing a type character opposite the platen 891 corresponding to the amount which has been subtracted from the register wheel.

The total setting having been completed, the operating handle, attached to shaft 301, is reciprocated, whereupon the total is printed and the parts restored to normal position.

The operating handle (not shown in this division) must not be operated while either the total or sub-total key is being depressed, or while the totalizer clearing mechanism is operating; and after either the total or the sub-total key has been depressed, and the type bars brought to position, then the operator must pull the operating handle so as to take the impression and restore the parts, otherwise the mechanical elements may become confused.

It is necessary therefore to provide mechanism which will prevent movement of the LIX operating handle (secured to shaft 301) during depression of the total key; or during depression of the sub-total key; or during operation of the so-called totalizing mechanism; and which will enforce operation of the handle after either the total key or the sub-total key has been fully depressed, or depressed and then released.

Various devices might be designed to compel operation in the required manner. In the form here shown, use is made of the full stroke pavvl 31e1 mounted on the shaft 359, and other parts associated therewith, to effeet these results.

This full stroke pawl, as explained fully in the parent application, cooperates with the full stroke ratchet 315 of familiar form mounted on and moving with the front Hipper operating cam or lever 320. This cam or lever is mounted on and secured to the shaft 301 to which the operating handle is directly attached. The flipper mechanism is not shown in this divisional application, as it has nothing to do with the features claimed in this division; but is shown and described in the parent application, and also in divisional application Serial No. 317,431 filed Nov. 5, 1928.

The full stroke pawl 314 is provided at its front end with a stud 37 3, which cooperates with a notch 3151l in the full stroke ratchet 315; and also with three cams 314, 31411 and 314, Figs. 1 and 2. iny one of these cams may be used to throw the stud 373 in front of the notch 31511. By shifting this pawl as hereinafter explained, the stud 373 is caused to move in front of the notch 31511, and thus prevent operation of the machine, except as the conditions are proper therefor, as will be more fully explained hereafter.

Total ccg/ loda-To prevent the operation of the handle, which is fast to the shaft 301, while either the total key or the sub-total key is in a partly depressed condition, a lever 627 pivoted on the front shaft 304, Fig. 1, is used. `When either the total key 217 8 or the sub-total key 2173 is depressed, one or the other of the rolls 35601, or 35601J mounted on the studs 2505, one in each of said keys, will contact with one or the. other of the cams 627a 627b on the lever 627, thus swinging the upper end of this lever toward therear, and the lower end toward the front of the machine.

An arm 6270 mounted for free rotation on the rear shaft 304b is connected with lever 627 by a link 6273 pivoted to levei` 627 at 3563n and to lever 6270 at 35631. The arm 6270 carries at its upper end a roll 639, which moves across the path of the cam 314a on the full stroke pawl 314.

Thus during the depression of either' the total key 2178, or the sub-total key 2173, so long as either the total or sub-total key is only partly depressed, the roll 639 will be in contact with the cam 314, and will swing and hold the pawl 314, so that the stud 373 on the end thereof will be in the path of the notch 31511 in the full stroke ratchet 315, as shown best in Fig. 2 where part of the cam 320 is broken away to show more clearly the pin 373 and the notch 31511 of the ratchet. But when the key is fully depressed, the roll 639 will have traveled over the cam 314, thus allowing the pawl 314 to be swung up into normal position by the action of its spring 334; the stud will thus be moved out of the path of the ratchet, and the operating handle can be operated as usual. Movement of the arm 6270 is limited by a fined stud 6530 which cooperates with a slot in thearm.

Total mechanism Z0cJ.--The means for preventing operation ofthe operating handle while the total mechanism is operating will now be described. To this end, use is made of a bail 6271, Fig. 2, mounted for free rotation on the rear shaft 30411, to the left of the previously described arm 6270. This bail is provided with an arm 6271d having a cam face 627111, and an arm 6271, which carries a pawl 6272 pivoted to the bail at 4601. This pawl 6272 carries a pin 4602, which works in a slot 4603 in the arm 6271, and has its movement limited thereby. il spring 6330 having one end secured to the pawl 6270 and the other to a stud fixed at some convenient place, as in the arm 6271c normally holds the pawl with its pin 4602a in the rear part of the slot 4603.

As explained in the parent case, whenever either the total key 2173 or the sub-total key 217 3is depressed, the key used releases the total segment 613 Figs. 1 and 2. The segment 613 is shown in full lines as moved from the home position, and'in broken lines in normal position. The rear end of the segment 618 ca 1ries a roll 3560, which lies in the path of arm 6271L of the bail 6271, Fig. 2, and which roll cooperates with the cam face 627111 on the arm 62713 Ls the segment 613 rises, the end carrying the roll 3560c moves down, and as it does so it forces the bail 6271 rearward, and as the bail moves the pawl 6272 moves with it. The rear end of this pawl lies in the path of the cam 314" of the pawl 314, and when the bail 6271 is forced toward the rear the pawl 6272 contacting the cam 3141J will rock the pawl 314, so that the stud 373 moves into the path of the notch 31511 on the full stroke ratchet 315, thus preventing the operating handle from being moved, F ig. 2. But when the segment 618 has traveled its full distance, the roll 3560c will move olf the cam 627111, thus allowing the bail 6271 with its pawl 6272 to move forward, and the p awl 314 moves to normal position.

The segment 618 is reset and latched on the forward stroke of the handle, as explained at length in the parent application. As this takes place, the roll 3560C Willy again force the bail 6271 toward the rear, but paWl 6272 is noviT held by the cam 314' of the paWl 314, which latter cannot now move, but the spring 6880 on the pawl 6272 Will yield, so that the bail 6271 can move rearward irrespective of the pavvl.

Loc/7.1 to compel 0pemtz'01i*After the total key 2178 or the sub-total key 2173 has been depressed, and the segment 618 has been released and caused the type bars to be set, as described at length in the parent case, and also in division Serial No. 317,431, filed Nov. 5, 1928, it then necessary that the operator be forced to make the total stroke.

To enforce this operation, another bail mounted inside of the bail 6271 on the rear v:haft 304" is used, Fig. 1. This bail com prises the hub 632, arm 6274 and arm 6276, all rigidly secured together, but mounted for free rotation on shaft 3041. The upper end of arm 6274 carries a roll 3560d which lies in the path of the cam 314C of the paWl 314, and a stud 657 Which lies in the path of a hook 62738r on the link 6273. Mounted on the arm 6276 is a paWl 6275 pivoted to the arm 6276 by a stud 35630. This paWl is provided With a spring 6880a secured at one end to a stud 4602a in the paWl and at the other end to a stud 4603a in the arm 6276. The end of the stud 4.602a moves in and is limited by a slot in the arm 6276.

IVIiile the segment 618 is held from movement, the roll 3560c on the segment engages the paWl 6275 on the bail and holds the bail in. the position shown in Fig. 1. But When the segment 618 is unlatched and allowed to rock around the stud 6564., Fig. 2, the roll 3560c tends to rotate the bail through the paWl.

A spring 6881, having one end secured to a pin in link 6273 and the other to stud 657 in the arm 6274, serves to hold the arm 6274 in position While the link is moving forward. As the link moves back, strain on this spring is released.

The link 6273 is provided With a hook 6273a which, when either the total or subtotal key is depressed, comes in contact With stud 657 fixed in the arm 6274, and prevents movement thereof. Inasmuch as the hook 6273a engages the stud 657 Whenever either key is depressed, the roll 3560c as it moves down cannot force the bail rearward; the movement of the roll 3560c therefore Will merely move the pawl and put the spring 6880n under tension. Now should the depressed key be released the hook 627 3al will move away from the stud 657 on the arm 6274 and the spring 6880 Will immediately move the bail comprising the hub 632, the arm 6274 and the arm 6276, thus causing the roll 3560d on the upper end of arm 6274 to contact With the cam 314c of the full stroke paivl 314, thus turning the same and bringing the stud 373 into the path of the notch 315 of the ratchet 315, thus preventing movement of the machine until the total or sub-total key shall have been again depressed. This makes it necessary upondepression of either the total or sub-total key that the machine shall also be operated to complete the taking of the total or sub-total, as the case may be, otherwise it Will be locked against operation.

What is claimed is:

1. In a calculating mechanism, the combination ofan operating mechanism, a totalizer, a totalizer'clearing mechanism, a full stroke pawl carrying a stop, and means controlled. by the clearing mechanism for shifting the full stroke pawl so as to carry the stop into the path of the operating mechanism duri-ng the movement of the clearing mechanism to prevent movement of the operating mechanism While the clearing mechanism is moving.

2. In a machine of the class described, the combination of an operating mechanism, a totalizer, a totalizer clearing mechanism, a gear segment for operating the clearing mechanism, a full stroke paWl for the operating mechanism, a cam on the paWl, a lever operated by the segment and' cooperating with the cam on the paivl for shifting the cam into the path of the operating mechanism so as to prevent operation of the operating mechanism While the clearing mechanism is operating.

3. In a calculating` mechanism, the combination of an operating mechanism, a depressible key, a spring actuated lock for the operating mechanism, means operated by the key for holding the locking means ineffective While the key is depressed, a totalizer, a totalizer clearing mechanism, means operated by the totalizer clearing mechanism for putting the spring of the lock operating means under tension so that the lock becomes efl'ective if the key is released Without operating the machine.

4. In a machine of the character described, the combination of an operating mechanism. a paivl adapted to be moved into the path of the operating` mechanism to prevent movement thereof, a spring actuated' means for operating the paWl, a totalizer. a totalizer clearing mechanism for placing tension in the spring of the pavvl operating means, a total key, and means operated by the total key for holding the pavvl actuating means against operation While the key is out of its normal position, but permitting its operation When the key is in normal position.

5. In a calculating machine, the combination of registering mechanism, a prime mover, a normally ineffective lock for said prime mover, a total key, means controllable by said total key for operating said lock, total setting means for setting up a total from said registering mechanism, and means operable from said total setting means for operating said lock.

6. In a calculating machine, the combination of a totalizer, a key operable to effectreturn of said totalizer to Zero, operating means for said machine, a lock for said operating means, means for rendering said lock eective when said key is only partially operatecl, means for rendering said lock effective during return t0 Zero of said totalizer, and means to render said lock effective when said key has been moved to efective position and back to ineffective position Without operating said operating means.

In testimony whereof, I have hereto affixed my signature.

EDNA B. GARDNER, Aclmz'nistoatm'm of UZg/de Gardner, Deceased. 

